1 // SPDX-License-Identifier: GPL-2.0-only 2 #include <linux/types.h> 3 #include <linux/export.h> 4 5 unsigned int x86_family(unsigned int sig) 6 { 7 unsigned int x86; 8 9 x86 = (sig >> 8) & 0xf; 10 11 if (x86 == 0xf) 12 x86 += (sig >> 20) & 0xff; 13 14 return x86; 15 } 16 EXPORT_SYMBOL_GPL(x86_family); 17 18 unsigned int x86_model(unsigned int sig) 19 { 20 unsigned int fam, model; 21 22 fam = x86_family(sig); 23 24 model = (sig >> 4) & 0xf; 25 26 if (fam >= 0x6) 27 model += ((sig >> 16) & 0xf) << 4; 28 29 return model; 30 } 31 EXPORT_SYMBOL_GPL(x86_model); 32 33 unsigned int x86_stepping(unsigned int sig) 34 { 35 return sig & 0xf; 36 } 37 EXPORT_SYMBOL_GPL(x86_stepping); 38